Electronics Forum: shear force (Page 1 of 5)

BGA shear force

Electronics Forum | Mon Jul 24 23:34:14 EDT 2000 | rzkr438

I am tyring to find out shear force requirement for BGA attached on board .I measured two group for shear force to check underfill process effectiveness on BGA .Two group showed siginificant force diferrence .I am very sure underfill process is effec

How to test & measure capacitors/resistors shear force strength

Electronics Forum | Fri Mar 30 18:24:12 EST 2001 | davef

There is no test. Beyond the issues that you mentioned that affect shear, an article published in a recent [1/01] "Journal Of Surface Mount Technology" documents that shear is also dependent on the rate of shear. You may be able to contact the auth

How to test & measure capacitors/resistors shear force strength

Electronics Forum | Fri Mar 30 13:06:50 EST 2001 | aortiz

Hi, I need support on the method or applicable standard to measure the shear force strength on chip capacitors and resistors. I know the soldered joints strength is related to land desing, solder volume, pcb and component solderability, component

How to test & measure capacitors/resistors shear force strength

Electronics Forum | Fri Mar 30 20:06:55 EST 2001 | aortiz

Maybe there's no test and I don't know where or why my customer came with that requirement (I think because in one of the board shipments he got a board were a smd resistor broke, but I think that happened because miss handling), but anyway I need so

How to test & measure capacitors/resistors shear force strength

Electronics Forum | Sat Mar 31 08:47:24 EST 2001 | davef

Sure, researchers measure shear as an element of their material characterization process, but that does not make it an acceptance test. [Truly, this conversation is not uncommon on SMTnet. So, it would not surprise me if an enterprising something o

reflow solder joint shear strength

Electronics Forum | Wed Jul 03 15:40:17 EDT 2013 | davef

Shear tests are [in my opinion] senseless. The shear stress you measure depends more on the shear rate and on the point where the force is applied than on the grain structure. When shearing a component, you not only apply shear stress, but also roll

Re: Passive component shear Testing

Electronics Forum | Tue May 23 20:39:37 EDT 2000 | Dave F

Scott: Sounds like fun: � Solder joint strength in pull/shear varies with lead geometry, solder volume, lead metal/metallization, and the test method. � Among things, IPC-TM-650 talks to getting pads off-of boards. For instance: Method 2.4.8 is for

Re: SMT Bead Shearing

Electronics Forum | Fri Nov 13 14:09:02 EST 1998 | Dave F

| Anyone using SMT "Fair-Rite" beads? We have a P/N 2743019447 that we're using. We need to know the shear force strength of the part and the vendor's man who knows is in Deutschland and can't help until Monday. I can't wait that long. | | Also, do

SMT Bead Shearing

Electronics Forum | Fri Nov 13 11:29:59 EST 1998 | smd

Anyone using SMT "Fair-Rite" beads? We have a P/N 2743019447 that we're using. We need to know the shear force strength of the part and the vendor's man who knows is in Deutschland and can't help until Monday. I can't wait that long. Also, does any

Adhesive strength specs

Electronics Forum | Wed Dec 10 11:11:04 EST 1997 | Rich Scheleski

Is there a spec for the adhesives used to hold down parts before wave soldering. What size dots are recommended and what is the maximum shear force(1LB?) tested for to ensure good adhesion. Your help is appreciated Rich Scheleski

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